Oil-treating apparatus



C. F. GAISER.

01L TREATING APPARATUS. 1,31 1,268.. APPLICATION Fm Nov. 2' 9 Patented July 29, 1919.

A 4; 4 9" v x 6 i I J CHARLES E. ensem or omolieo, I'LLnvoIs.

OIL-TREATING APPARATUS.

Specification of Letters Patent. Patented July 29, 1919.

Application filed November 2, 1917. Serial No.'199, 832.

To all whom it may concern:

Be it known that I, CHARLES F. GAISER,

a citizen of the United States, residing-at Chicago, Illinois, have invented a certain 5 new and useful Improvement in Oil-Treating Apparatus, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appe'rtains to make and use the same.

This invention relates to oil stills and'oil treating apparatus of the kind that comprise a coil of pipe or a number ofpipesiconnected together in such a manner that they form a continuous conduit throu h which 1 5 the oil being heated flows, said 0011 'or conduit being formed from ordinary metal pipe or tubing and heated by a gas flame, furnace or other suitable means.

One objectionable feature of oil stills and oil treating apparatus of the kind referred to is that they do not heat the oil uniformly, especially if large-sized pipe or tubing is "used to form the coil, owing to the fact that the heat will not penetrate clear through the oil and raise "the 'oil at the center of the I the oil becoming scorched.

Still another objectionable feature of such stills and oil treating apparatus is that there is no way of ascertaining the average temperature of the oil flowing through the coil.

The main object of my invention is to provide an oil still or oil treating apparatus of the general type referred to, whose coil or continuous conduit is so constructed that the oil flowing through same will be heated uniformlyand without danger of scorching the oil.

Another object is to provide an'oil still or oil treating apparatus that is equipped with a coil or continuous conduit and a pressure gage combined in such a manner that the operator incharg e of the apparatus can ascertain at any time the average temperature of the entire body of oil flowing through, the coil.

To this end -I have devised an oil still or oil treating apparatus equipped with a heating coil or continuous conduit, which, in cross section, is of annular form instead of tubular form, thereby providing a passage way for the oil which is of such dimensions that the heat can easily penetrate through the oil and heat the oil' uniformly. The coil orconduit is preferably provided with a center space arranged inside of said annular oil passageway, which space is sealed, at one end and provided at its opposite end with a pressure gage. Ifdesired, said annular oil passageway may be provided with one or more spiral vanes so as to cause the oil to follow a spiral path 'in flowing through ,saidpassageway, thus insuring all portions of the oil coming in direct contact with the walls of said passageway to which the-heat is applied.

Figure 1 of-thedrawings is a vertical sectional view of an oil still on oil treating apparatus constructedin accordance with my invention; and

apparatus through which the oil being heated or treated flows.

Referring to the drawings which illus trate one form of my invention, A designates a tubular structure of coil form or other desired shape through which oil-that is to be distilled or treated flows, and B designates burner ports or other suitable means for heating said tubular structure. In the form of my invention herein shown the member'A consists of a coil formedfrom two pipes or tubes 1 and 2 arranged one within the other'and spaced apart so as to form an annular passageway w through which the oil'being heated or treated flows. One end of the annular passageway a: com-' municates with a su ply pipe 3 through which the: oil is supp led to same, and the opposite end of said passageway communicates with a discharge pi e 4. The center space 3 inside ofthe pipe 2 is sealed or cut off from the atmosphere at one end by means of a valve 2 that is normally closed and a pressure gage 5 is arranged at the opposite end of said space. Any suitable means can be used for holding the pipe 2 centered with relation to the pipe 1, but I preferto arrange-one or more spiral vanes 6 between said pipes, as shown in Fig. 2. The vanes 6 hold the ipes 1 and 2 in proper spaced relation and they also cause the oil flowing through the passageway a: to be agitated an thoroughly mixed and come in contact with the outer wall of said passageway to which the heat is applied.

An oil heating means of the construction above described is more efiicient than a coil or continuous .conduit formed from ordi fact that it is not necessary touse an eX- tremely high temperature, so as to insure the heat penetrating through the oil, as is necessary in oil stills and oil treating apparatus of the kind now in general use, eliminates the possibility of the oil becoming scorched; and-still another desirable featureof such a device is -that the spiral vanes that are arranged in the annular oil passageway cause the oil to be thoroughly mixed and brought in direct contact with a portion of the passageway to which the heat is applicdjvhile it is flowing through said passageway.

As previously stated, the center space that is surrounded by the annular oil passageway w is sealed at one end and provided at its opposite end with a pressure gage. By constructing the device in this manner I produce a pyrometer that sho w s the average temperature of the entire body of oil flowing through the device, for when the still or apparatus is in operation the air or gases in the center space y expand as the temperature of'the oil is raised, and thus operate the pressure gage. In other words, when the still or apparatus is in operation, the pressure in the sealed center space increases or decreases in direct proportion to the increase or decrease in temperature of the oil flowing through the annular passageway a: surrounding said space, thereby enabling the operator in charge of the apparatus to ascertain the average temperature of the entire body of oil flowing through the member A by simply observing the pressure gage 5. With an ordinary heating coil or continuous conduit it is possible to get the temperature of the oil flowing through same only at the point where the bulb of ever, that it shows at all times the average temperature of the entire bodyof oil flow ingithrough the oil passageway a2.

avin thus described my invention, what I c aim, and desire to secure by Letters Patent, is:

1. An apparatus of the character described provided with a passageway. of annular form in cross section through which oil flows and also a closedspace in which a variable pressure is created according to the temperature of the oil flowing through said passageway, means for heating said passageway, and means for indicating the pressure in said closed space.

2. An apparatus of the character described, provided with a continuous conduit whose interior is divided into an annular passageway through which oil flows and a center space surrounded by said passageway, said center space being cut oil from the atmosphere so as to cause the air or gases in said space to vary in pressure as the temperature of the oil flowing through said passageway varies, and means combined with said center space for indicating the average temperature of the oil flowing through said passageway.

3. An oil heating device for the purpose described, comprising a continuous conduit formed from two pipes or tubular members arranged one within the other, spiral vanes arranged between said pipes, the inner pipe being sealed to the atmosphere, and means for indicating the pressure in said inner pipe.

4. An apparatus of the character described, provided with a double walled coil arranged so that the center portion of same forms a closed pressure chamber that is surrounded by a passageway through which oil circulates, means for indicating the pressure in said pressure chamber, and means for applying a heating medium to the exterior of said coil.

CHARLES F. GAISER. 

